600
��Popular Science Monthly
���Arrangement of parts and connections for Bunsen burner and blow-torch
Bunsen Burner and Blow-Torch Combined
A COMBINATION Bunsen burner and blow-torch can be made from 'jy-inch gas fittings. The cost should not exceed $1.
The following material is needed:
Two tees, A.
Five 1-inch nipples, B, C,
One floor plate, D.
One air-mixer from an inverted gas burner, E.
One air-mixer from an npriglit gas burner, F.
One straight valve, G.
One "L" valve, H.
One valveless hose connection, K.
The fittings should be assembled as shown.
By careful adjustment of the air- mixer, F, an intensely hot blue flame twelve to eighteen inches long can be secured. By regulating the mixer, E, the usual Bunsen flame ma\' be obtained. • — A. C. Fisher and J. B. Whittaker.
��Brass Tube Cleans File Teeth
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��V^ETH of a file clogged with lead or other metals can be cleaned with a short length of brass tubing. The file should be held on edge and the tubing forced along the teeth. Wedges will be formed at the end of the tubing, which will force out the metal which has formed between the file t'^eth and thor- oughly clean the file. — E. B. Williams.
��Cutting Glass Bottles and Tubes with Oil
TO cut a glass bottle or tube, fill with lubricating oil to the level you wish the vessel to be cut. Then heat an iron rod to the point of redness and slowly dip it in the oil. When the oil gets hot, the vessel will crack round the top of the oil, making a clean, even break that can be dressed off on a grind- tone. — A. E. Smith.
A Coarse File for Soft Metals
LEAD or other soft metals can be filed with an ordinary flat file which is annealed and cut along one edge with sharp angular teeth. Afterwards, the file should be rehardened.
— E. B. Williams.
A Trousers-Hanger
THE pieces B, B\ B\ and B' are flat strips of metal riveted to make flexible joints. The rivet R is made with a hole in its head large enough for the rod to slide through and connect to the rivet K, while C and O are clips to
���This trousers-hanger is easily made and is more efficient than those which can be bought at most stores
hold the trousers, and are connected to B and B' by flexible joints. The clips slide on the rod O. The weight of the trousers will be exerted at the point K, thus pushing out the strips B and B' and stretching the trousers. This appliance is not only light and non-breakable, but it is also easy to make. Every man should welcome it. — Leo M. Lafane.
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